More specifically (btw pint = 568ml) when I said about laughing at it I meant more at how it's so little you might as well not drink at all. Which I get is their point as this poster obviously loathes alcohol and thinks it's the most dangerous thing in the world, but yet we're not all dropping left and right as you'd expect. If it was that dangerous the UK population would've been wiped out by now.

No one, literally no one, goes out and has half a pint then says "well the label says that's too much so I'm off home". That's where, right or wrong, the suggestion is kind of laughable.

It's an ideal, perhaps. But it's such a tight ideal that no one will even try to follow it. Maybe if they aimed for "better" rather than "almost perfect" (with perfection being teetotality) they'd have more success. A label more like "if you can't remember what happened when you wake up tomorrow, you're severely harming your health" would at least get some of those in the biggest danger to rein it in a bit.